—I will go to Kunming by plane for summer vacation next week.

—       .      [ ]

A. It's nice of you                

B. I believe you can    

C. Have a great time              

D. It will be difficult

既能清实热，又可退虚热的药物是（）

A.石膏

B.知母

C.黄芩

D.苦参

E.栀子